package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.entity.*;
import com.itheima.reggie.exception.CustomException;
import com.itheima.reggie.mapper.OrderMapper;
import com.itheima.reggie.service.*;
import com.itheima.reggie.util.BaseContext;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.RequestBody;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {
    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrderDetailService orderDetailService;

    @Override
    public void submit(Orders orders) {
        //获取用户id
        Long userId = BaseContext.getId();
        //获取购物车明细  订单明细
        LambdaQueryWrapper<ShoppingCart> lqw = new LambdaQueryWrapper<>();
        lqw.eq(ShoppingCart::getUserId, userId);

        List<ShoppingCart> shoppingCarts = shoppingCartService.list(lqw);
        if (shoppingCarts != null && shoppingCarts.size() > 0) {
            //获取用户信息
            User user = userService.getById(userId);
            //获取地址信息
            Long addressBookId = orders.getAddressBookId();
            AddressBook addressBook = addressBookService.getById(addressBookId);
            if (addressBook == null) {
                throw new CustomException("用户地址信息有误，不能下单");
            }

            long orderId = IdWorker.getId();//订单号

            AtomicInteger amount = new AtomicInteger(0);//订单总金额

            //订单详情
            List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) -> {
                OrderDetail orderDetail = new OrderDetail();
                orderDetail.setOrderId(orderId);    //订单号
                orderDetail.setNumber(item.getNumber());//数量
                orderDetail.setDishFlavor(item.getDishFlavor());//口味
                orderDetail.setDishId(item.getDishId());//菜品id
                orderDetail.setSetmealId(item.getSetmealId());//套餐id
                orderDetail.setName(item.getName());//菜品名称
                orderDetail.setImage(item.getImage());//图片
                orderDetail.setAmount(item.getAmount());//实收金额
                amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
                return orderDetail;
            }).collect(Collectors.toList());

            //订单信息
            orders.setId(orderId);
            orders.setOrderTime(LocalDateTime.now());
            orders.setCheckoutTime(LocalDateTime.now());
            orders.setStatus(2);
            orders.setAmount(new BigDecimal(amount.get()));//总金额
            orders.setUserId(userId);
            orders.setNumber(String.valueOf(orderId));
            orders.setUserName(user.getName());
            orders.setConsignee(addressBook.getConsignee());
            orders.setPhone(addressBook.getPhone());
            orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                    + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                    + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                    + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));
            //向订单表插入数据，一条数据
            this.save(orders);

            //向订单明细表插入数据，多条数据
            orderDetailService.saveBatch(orderDetails);

            //清空购物车数据
            shoppingCartService.remove(lqw);
        }
    }
}